Aider
1
Incidents
6.3
Avg Severity
0
Critical
0
High
Top Failure Modes
Wrong File
1
Worst Incident
STUPID-2026-0005 6.3/10Aider modified wrong file — edited production config instead of dev config
Amazon Kiro
1
Incidents
10.0
Avg Severity
1
Critical
0
High
Top Failure Modes
Destructive Action
1
Worst Incident
STUPID-2026-0046 10/10Amazon's Kiro agent deleted production, causing a 13-hour AWS outage and ~6.3M lost Amazon.com orders
Comparison Summary
| Metric | Aider | Amazon Kiro |
|---|---|---|
| Total Incidents | 1 | 1 |
| Avg Severity | 6.3/10 | 10.0/10 |
| Critical Incidents | 0 | 1 |
| Top Failure Mode | Wrong File | Destructive Action |
Frequently Asked Questions
Is Aider or Amazon Kiro more reliable?
Based on StupidLLM data, Aider has 1 documented failures (avg severity 6.3/10) while Amazon Kiro has 1 (avg severity 10.0/10). Aider shows better reliability based on average severity scores.
What are the main differences between Aider and Amazon Kiro failures?
Aider's most common failure mode is wrong file, while Amazon Kiro most commonly fails via destructive action. Aider has 0 critical incidents vs Amazon Kiro's 1.